Non-jamming sliders



Dec. 2, 1958 L. H. MORIN NON-JAMMING SLIDERS Filed May 15, 1955 INVENTOR LOUIS H MORIN ATTOR EY NON-JAMMING SLIDERS Louis H. Morin, Bronx, N. Y.

Application May 15, 1953, Serial No. 355,203

8 Claims. (Cl. 24205.15)

This invention relates to non-jamming sliders for use in coupling and uncoupling separable fastener stringers. More particularly, the invention deals with sliders of the character described, employing what I term a floating back or bottom wall structure free to yield in the event that the slider is subject to stresses or strains caused by jamming of the scoops of a separable fastener.

Still more particularly, the invention deals with a slider structure of the character described, wherein an elongated flat spring member is employed to normally support the back or bottom wall portion of the slider in normal operative position.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

Fig. 1 is a bottom plan view of a slider made according to my invention, with parts of the construction broken away;

Fig. 2 is a longitudinal section of the slider as shown in Fig. 1, indicating part of the slider pull, and with parts of the construction broken away and with parts shown in elevation;

Fig. 3 is a section on the line 33 of Fig. 1;

Fig. 4 is a view similar to Fig. 2, showing only part of the construction and showing a modification; and

Fig. 5 is a partial section on the line 5-5 of Fig. 4.

In Figs. 1 to 3 inclusive, I have shown a slider comprising top and bottom walls and 11, the top wall having a depending web or post 12 at one end portion thereof, the sides of the post being recessed as seen at 13, note Fig. 3 of the drawing, to provide a somewhat reduced extension 14, the latter terminating in an elongated rivet portion 15.

The wall 11 seats upon the shoulder formed by the recesses 13, and this wall, together with the wall 10 and web 12, form a normal channeled slider body structure. Considering Fig. 2 of the drawing, it will appear that the wall it has inwardly extending flanges 16, and the wall 11 inwardly extending flanges 17 on the wall 11, which defines the single channel 18 at one end of the slider body.

The wall 10 has on its upper surface two pair of lugs, one pair of lugs being shown at 19 in Fig. 2 of the drawing, in which the pivot end portion 20 of a pull 21 is pivotally mounted. The pull has a lock finger 22 which extends through an aperture 23 in the wall 10 to enter the channel 18 and engage the stringer scoops to retain the slider against movement on the stringers; as with other sliders of this kind well known in the art.

nited States Patent 0 The wall 11, in the construction shown in Figs. 1 to 3 inclusive, has a long and substantially V-shaped recess 24 in the lower or outer surface thereof and side members of the wall 11 terminate at the wide part of the web 12, as seen at 25 in Fig. 1 of the drawing. The Wall 11 has an integral outwardly projecting rivet member 26, which is adapted to pass through an aperture 27 in the narrow end portion 28 of a leaf spring 29. The other wider end portion 30 of the leaf spring conforms generally to the contour of the web 12 at the edge 31 thereof. The wide end 30 of the spring has an elongated aperture 32 for receiving the rivet 15. in coupling the spring with the post 12. The leaf spring is ofiset so as to extend the end 28 thereof into the shallow portion of the recess 24. However, the side walls 33 of the wall 11 at opposite sides of the leaf spring substantially conform to the curved contour of the spring, so that the spring 29 is actually housed within the recess 24 throughout the greater portion of its length.

Considering Fig. 3 of the drawing, it will be apparent that side walls 33 of the wall 11 have inwardly projecting flanges 34 which seat upon the shoulders, as at 13, which checks movement of the wall 11 toward the wall 10. A similar seating is provided at the contracted end of the web 12, as noted at 36 in Fig. 2 of the drawing. The recess 24 will provide movement of the entire wall 11 away from the wall 10 against the action of the spring 29 as and when the slider is subjected to jamming for any reason whatever. In Fig. 3, the movement of the wall 11 on the extension 14- of the web or post 12 is clearly illustrated.

In Figs. 4 and 5 of the drawing, I have shown a slight modification of the structure shown in Figs. 1 to 3 inclusive, wherein the wall 11' differs from the wall 11 in including a pair of retaining members 37 which pass around the extension 14 of the post or web 12'. In other words, the extension 14' is cut out in order to receive the members 37, as seen in Fig. 5. The member 37 serve to retain the wall 11 against displacement from the associate wall of the slider, which is not shown in Fig. 4 of the drawing. This further dispenses with the necessity of including the rivet 26 as well as the opening 27 in the spring, as shown in Fig. 2 of the drawing. Otherwise, the spring 29 is of the same general construction as the spring 29 and is secured to the extension 14 by an integral rivet 15' similar to the rivet 15.

Cutting out the extension 14 to receive the members 37 leaves on the extension 14 a projection 38, note Fig. 5. The members 37 are of the same thickness as the projection 38, thus the spring 29 bears upon the members 37 which operates to hold the endportion of the wall 11', including said members, against movement longitudinally of the extension 14'. To the contrary, the members 37 form pivot members on which the wall 11' can swing against the action of the spring 29. In thisrespect, the structure of Figs. 4 and 5 differs from that. shown in Figs. 1 to 3, wherein the entire wall 11 is capable of movement relatively. to the wall 10 against the action of the spring 29.

By providing the movable wall structure on the slider at the back or bottom thereof, it will be apparent that the normal structure of the top wall 10 can be maintained, particularly with respect to the pull mounting and the locking element of the pull, as with other sliders of this type and kind. The housing of the spring within boundary walls of the bottom wall 11, 11 produces a position.

neat and finished appearance and avoids interference with other articles in operation of the slider along the stringer. This is an important factor, particularly with some uses of fasteners of the kind under consideration.

It will be apparent that the coupling and seating of one end portion of the spring in the movable bottom wall, maintains alignment of this wall with respect to the top wall, thus maintaining the common alignment of the flanges of said walls in defining the single channeled end of the slider body. This alignment of the bottom wall is further accentuated through the side portions of the bottom wall overlying and conforming with the contour of the spring, at least when said bottom wall is in normal The other spacing of the walls is maintained by the normal support of the bottom wall on the seat of the web or post.

I also preferably provide means to check movement of the walls 11, 11 toward the companion walls of the slider body in order to prevent frictional engagement of the walls with the scoops of a separable fastener in the normal operation of the slider. This is accomplished in Fig. 1 to 3 inclusive by the provision of outwardly extending stop lugs 39 on the web 12 adjacent the ends as at 25 of the wall 11 and arranged above the flanges as at 34, note in this connection Fig. 3 of the drawing. These lugs will check inward tilting movement of the wall 11 in the direction of the wall 10, it being understood that the wall 11 is further checked by the seat as at 36. In Figs. 4 and of the drawing, the same result is accomplished by the provision of upwardly extending lugs 40 on the retaining members 37 which will bear upon the inner surface of the spring 29'. In other words, the outer surfaces of the lugs 40 will be in alignment with the corresponding surface of the projection 38 which bears on the inner surface of the spring in the manner clearly shown in Fig. 4 of the drawing.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A slider for separable fastener stringers comprising a body defined by spaced walls having inwardly directed side flanges forming a channel between said walls, one wall including an integral web at one end portion thereof, said web including a projecting rivet portion, the other wall of said body seating on a shoulder on said web in 'the environment of said rivet portion, a leaf spring fixed to the rivet portion and engaging said second wall to support the second wall normally in seated position on said web, and said spring facilitating movement of the second wall relatively to said first wall.

2. A slider for separable fastener stringers comprising a body defined by spaced walls having inwardly directed side flanges forming a channel between said walls, one wall including an integral web at one end portion thereof, said web including a projecting rivet portion, the other wall of said body seating on a shoulder on said web in the environment of said rivet portion, a leaf spring fixed to the rivet portion and engaging said second wall to support the second wall normally in seated position on said web, said spring facilitating movement of the second wall relatively to said first wall, said second wall being recessed to receive the free end portion of said spring, and portions of the second named wall conforming to the contour of the spring to house the spring within boundaries of the second wall when the second wall is in normal position.

3. A slider for separable fastener stringers comprising a body defined by spaced walls having inwardly directed side flanges forming a channel between said walls, one wall including an integral web at one end portion thereof, said web including a projecting rivet portion, the other wall of said body seating on said web in the environment of said rivet portion, a leaf spring fixed 'to the rivet portion and engaging said second wall to support the second wall normally in seated position on said web, said 4 spring facilitating movement of the second wall relatively to said first wall, said second Wall being recessed to receive the free end portion of said spring, and a rivet pin on the second wall engaging said spring in coupling the second wall against displacement from said web.

4. A slider for separable fastener stringers comprising a body defined by spaced walls having inwardly directed side flanges forming a channel between said walls, one wall including an integral web at one end portion thereof, said web including a projecting rivet portion the other wall of said body seating on said web in the environment of said rivet portion, a leaf spring fixed to the rivet portion and engaging said second wall to support the second wall normally in seated position on said web, said spring facilitating movement of the second wall relatively to said first wall, said second wall being recessed to receive the free end portion of said spring, and said second wall having means engaging said web to retain the second wall against displacement with respect to said web.

5. A slider for separable fastener stringers comprising a body defined by spaced walls having inwardly directed side flanges forming a channel between said Walls, one wall including an integral web at one end portion thereof, said web including a projecting rivet portion, the other wall of said body seating on said web in the environment of said rivet portion, a leaf spring fixed to the rivet portion and engaging said second wall to support the second wall normally in seated position on said web, said spring facilitating movement of the second wall relatively to said first wall, said second wall being recessed to receive the free end portion of said spring, and said first named wall have outwardly projecting means forming a pivotal mounting for a pull in connection with said wall.

6. A jam-releasable slider for slide fastener stringers comprising a flanged top wall, a web integrally joined to the top wall, an integrally formed flanged bottom wall separate from and movable with respect to the web, interengageable means on the bottom wall and the web for retaining the bottom wall against lateral movement relatively to the top wall while enabling said bottom wall to move as a unit away from and toward said top wall, an elongated spring plate extending longitudinally of the bottom wall and serving to retain the bottom wall in engagement with the web, one end of said plate being fixedly secured to the web near the end thereof opposite to said top wall and the other end engaging the bottom wall near the narrow end of said slider, said plate being biased to normally retain the bottom wall in stringer-operating position relatively to the top wall, said bottom wall being movable away from the top wall against the action of spring plate by engagement of the slider with an obstruction disposed between the slider and said stringers.

7. A jam-releasable slider for slider fastener stringers comprising a flanged top wall, a web integrally joined to the top wall, a flanged bottom wall separate from the web, interengageable means on the bottom wall and the web for enabling said bottom wall to move away from and toward said top wall, a spring plate disposed along said bottom wall and serving to hold the bottom wall in stringer-operating position relatively to the top wall, one end of said plate being secured to the web near the end thereof opposite to said top wall and the other end engaging the bottom wall near the narrow end of said slider, said bottom wall being movable away from the top wall against the action of said spring plate by engagement of the slider with an obstruction disposed between the slider and said stringers.

8. A jam-releasable slider for slide fastener stringers comprising a flanged top wall, a web integrally joined to the top wall, a flanged bottom wall separate from the web and having a recess engageable by the web, said bottom wall being movable away from and toward said top wall, stop means on the web for limiting movement of the bottom wall toward the top wall, an elongated References Cited in the file of this patent UNITED STATES PATENTS 2,090,124 Hossmann Aug. 17, 1937 6 Mucci Nov. 28, 1939 Poux Aug. 31, 1948 Deutsch Aug. 29, 1950 Meech May 13, 1952 Dellaquila July 23, 1957 FOREIGN PATENTS Australia Jan. 13, 1944 Great Britain Oct. 28, 1935 

